I use a Burley Flatbed, and have been meaning to consider using it with my Kona Roadhouse. Just checked of the hitch would fit- it looks like it would only need to be clamped into a vice to be easily drilled out to a size that would work with the Kona’s ThruAxle.

I don’t enjoy riding that bike enough to do it, but it looks doable.

Are there recumbents with ThruAxles?